Families of victims killed at Sandy Hook allege Remington was negligent in supplying AR-15 to distribution channel that led to killer’s mother buying the gun

A lawsuit in Connecticut against a leading maker of AR-15 rifles is awaiting a pivotal court ruling over whether the gun industry can be held legally responsible for mass shootings.

The Connecticut Supreme Court is deciding whether to throw out a wrongful-death lawsuit brought by families of victims killed at Sandy Hook Elementary School against the manufacturer of the semiautomatic gun Adam Lanza used in the 2012 rampage.

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Can Gun Makers Be Held Liable for Mass Shootings?

Parents of the victims killed at Sandy Hook are using a 1977 lawsuit about a slingshot to help prove that Remington Outdoor Co. is partly responsible for their children's deaths. WSJ’s Spencer Macnaughton explains. Illustration: Heather Seidel